Control device



M. B. GROUT CONTROL DEVICE Dec. 2, 1930.

Filed March 4, 1927 7m/5l? Uf.' ZTEPZZHEZEFW Ey 1.4.

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'l mi@ Patented Dec. 2, 1930 .UNITED vs..'i'zzi-'rri-:sj PATENT OFFICEyIll/.[Allt'l1N BGROUT, OF CHICAGO, ILLNOXS, ASSGNOR TO KELLOGGSNI/1STCHBOARD` AND SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CGRIPORATIONOF ILLINOIS contract DEVICE replication` nea' March' 4, i927. Y serialN0.`172,744.

My invention relates to controldevicesaiid has to do, moreparticularlywith vmultiple control devices such as are used.: forcontrolling the simultaneousmovement of the rotor elements of aplurality oftuning'couplers or condensers, as are used in broadcastreceiving sets; and an obgect of myinvention resides ation of the same.`'K

Previous to my invention it has Vbeen customary to use beveled gears,`or the like, to

in the novel method of construction and opercontrol a gang-:of couplersvor condensers. rThis method has had drawbacks, such as the play in thegears, etc.; to overcome these.

diiiiculties I -have provided Va device that worls'smoothly and is vnotsubject` to the disadvantages of the prior' devices. While I' providedwitha pair of: helical cam faces winch cooperate with a pair ofreciprocating rods which actuate meanssecured to a shaft supporting therotor elements of a plurality or tuning couplers or transformers torotate the said shaft :so asto angularly displace the. said rotorelements simultaneously relative to their associated stator elements.

vision of a double wing member secured to the shaft supporting the rotorelements which' are acted upon by the reciprocating rods to' bring aboutthe rotation of the rotor elements of the transformers for either looseor close coupling relative to the stator element.

The above features as well as others not specifically pointed out willbe more fully described and explained in the` following specificationand for a more completeunderstanding of my invention'reference` maybe,

had to the accompanying drawing in which like reference characters inthe several views denote like'parts, and in which: l

Fig. 1 is a side'v elevation of the control member for controlling themovement `of the rotor `element of at-ransformer.

Fig. 2 is Va plan view of Fig. 1 with the transformer shown in sectionto clearly illustrate the method of securing the rotor element of thetransformer to the shaft associated with the control element.

Fig. 3 is a sectional view on the line 3-3 of Fig. 2, and

Fig. l1 is a side elevation of the control member in an intermediateposition to clearly illustrate how the movement of the rotor elements ofthe transformers is accomplished.

Referring now more in detail to the control `member of my invention Iillustrate the saine operating in connection with a transformer TAcomprising a stator tube 2 and mounted `within the stator tube 2 isarotatable rotor tube 3, shown most clearly in 2'. The stator tube 2 ismounted upon a base board -fl by a bracket 5 provided with suitable legsto which the stator tube 2 is secured by suitable fastening means, thesaid bracket 5 being in'turn secured to the base board 4 by means ofsuitable screws. Y

The rotor element 3 is provided with a pairv oforiiices 8 and' 9diametrically cpposite which are adapted'to receive the sleeveextensions 10 of a pair of bushings 11 secured to the innercircumferential face of the rotor tube 3 by suitable means. The statortube 2 is provided with a pair of ori fices 12 and 13 diametricallyopposite and in n I alignment with the orifices 14 which extendl Anotherfeature of my invention is the pro-,

through the sleeve extensions 10 of the bushings 11. The orifices 12and'13 in the stator tube 2 and orifices 14 in the sleeve extensions 10are of the same size and in alignment and y are adapted to receivesleeves 15 and 16. A supporting rod 17 extends vthrough the sleeves 15and 16 to support the rotor tube 3 within the stator 4tube 2. Thebushings 11 secured to the rotor tube 3 are provided withtapped'oriiices 18 which are adapted to re 99 degree coupler type, thesaid rotor tube 3 may be rotated 90 degrees or ui'rtilV it is at rightangles to the anis of the stator tube A bracket n5 is llfotally securedto a U ma ied depend' n; men'iber by means of the rivets 27. A inate 23provided with ears 29 has pivotally secured to it by means of the rivets39 the U shaped member 26, and this plate 28 is secured to a suitablebase board or sub panel 4 by suitable screws and the U shaped member 26,bracket and plate 28 are pivotally secured, as just de- "ed foradjusting purposes relative `to i other. The bracket 25 which is pivottothe Ll shaped member 26 eX- lf-z rearwardly therefrom and is provided fhpair of integrally formed cars 31 ei:-

upward and which are provided .1 ily secured wr a ttntiiil alignedorifices through which the rod which supports the rotor trl" 3. extends.racket also is prof:V de with three ally formed upwardly extending earsintegr 32, 33 and 34 which are provided with aligned oriA s 36 isrotatably supported i i g ornices 35, in the ears 32. and 34 and hasecurcd to it a cylindrical cam member 37 provided with a pair ofrecedingY helical cam laces 33 and 39. A pair of reciprocating rods 4()and 41 are slida ly supported in aligned orifices 42 and in the ears 33and 34 of the bracket and operatively associated with the cam member 37secured to the shaft 36 for purposes as will 'nesently be described.

A member 44 secured to the rod 17 by means of the set screw 45 restsbetween the. ears 31 of the bracket 25 and is provided with a pair ofintegrally formed wings 45 and 46 diametrically opposite and which areengaged by the rounded ends 47 and 48 of the reciprocating rods and 41.The cam member 37 secured to the shaft 36 is positioned thereon betweenthe integrally formed ears 32 and 33 of the bracket 25 and a helicalspring 49 on the shaft 36 resting between the ear 32 of the bracket 25and the end face 50 of the cam member 37 forces the helical cam faces 38and 39 in engage-ment with the angular formed ends 51 and 52 of thereciprocating rods 40 and 41 and the opposite rounded ends 47 and 48 ofthe reciprocating rods 40 and 41 are in turn forced into engagement withthe respective wings and 46 of the member 44. It is readily apparentthat the spring 49 acting against the cam member 37 maintains theangular faced ends 51 and 52 of the reciprocat-ing` rods 40 and 41respectively in engagement with the receding helical faces 38 andi-39 ofthe cam member 37 and also maintains the rounded ends 47 and 48 of thereciprocating rods 40 and 41 respectively in engagement with thediametrically opposite wings 45 and 46 of the member 44 secured to therod 17 and also prevents any lost motion between cam member 37,reciprocating rods 40 and 41 and the wings 45 and 46. The spring 49 alsoprovides frictional means to maintain the rotor element 3 in any of itsadjusted positions. rlhe end of the shaft 36 which extends forward ofthe ear 32 of the bracket 25 has secured to it a suitable operating knobto facilitate the rotation of the shaft 36 and the cam member 37 securedthereto and has secured thereto a suitable indicator. Graduations on thepanel 57 in association with the indicator will indicate the degree ofrotation of the rotor element 3 of the transformer T. To rotate therotor tube 3 relative to the stator tube 2 the shaft 36 is rotated inthe direction of the arrow as in dicated thereon in Fig. 3 through themedium of a knob. As the cam member 37 is secured thereto it is alsorotated when the shaft 36 is rotated. As the cam member 37 rotates theangular faced ends 51 and 52 of the reciprocating rods 40 and 41 followthe contour of the respective cam faces 38 and 39 and as the helical camface 39 of the cam member 37 advances due to rotation of the shaft 36 inthis direction it forces the reciprocating rod 41 to the right withreference to Fig. 3 and as its opposite rounded end 48 engages the wing46 of the member 44 secured to rod 17, the. said wing 46 is also forcedto the right causing `the rod 17 to which the member 44 is secured torotate, and the rotor element 3 which is secured to the rod 17 as beforedescribed, is rotated relative to the stator element 2 as clearlyillustrated in Fig. 4. The wing 45 of the member 44 which is`diametrieally opposite the wing 46 is moved to the left withreferenceto Fig. 3 and as the rounded end 47 of the reciprocating rod 49 engagesthe wing 45, the said reciprocating rod 40 is moved to the left due tothe movement of the wing 45. rThe opposite angular faced end 51 of thereciprocating rod 40, being in engagement with the helical cam face 38,follows the receding cam face 38 due to the rotation of the cam member37 to permit the movement of the reciprocating rod 4() to the left.

To return the rotor element 3 from the position shown in Fig. 4 to theposition shown in Fig. 2 the shaft 36 is rotated in the oppositedirection to that indicated by the arrow, to cause the advancing helicalcam face 38 to force the reciprocating rod 40 to the right withreference to Fig. 4, causing the wing 45 to be moved to the right thusrotating the rod 17 and rotor element 3 secured thereto. The Wing 46 isof course moved to the left and as the angular end face 52 of thereciprocating rod 41 engages the cam face 39 it follows the receding camface 39 to permit the movement of the reciprocating rod 41 to the left.A stop pin secured to the cam member 37 and angular extensions 61 on thebracket 25 cooperate to prevent excessive rotation of the shaft 36 ineither direct-ion.

While I have illustrated and described the control device of myinvention associated with a single transformer T of the coupler type itis of course readily apparent that the device is applicable to amultiple control arrangement in which a plurality of trans formers as Tor tuning Ydevices are to be controlled. Y

While I have described a particular form of my invention it is to beunderstood that changes and modifications Will readily suggestthemselves to those skilled in the art and I therefore aim to cover allsuch changes and modifications as come within the spirit and scope ofthe appended claims.

What I claim as new and desire to secure by United States LettersPatent, is as follows: i

1. A device of the character described in.- cluding a shaft adapted tobe rotated, a rocking member secured to said shaft, a second shaftmounted at right angles to said first shaft, a supporting bracket forsaid second shaft, means for pivotally supporting said bracket, a cammember attached to said second shaft, and sliding means lying bem-eensaid cam and said rocking member and spring pressed into engagementrespectively with said cam and said rocking member for connecting saidcam member to said rocking member on said first shaft for rotating thesame When said second shaft is rotated.l

2. A device of the character described including a shaft adapted to berotated, a rocking member secured to said shaft, a second shaft mountedat an angle to said first shaft, a supporting bracket for said secondshaft, means pivotally supporting said bracket, a cam member secured tosaid second shaft and longitudinal movable member controlled thereby fortransmitting movement from said second shaft to said first shaft throughsaid rocking member and spring means for maintaining said cam inengagement with said movable member and said movable member inengagement with said rocking member.

8. A device of thecharacter described in cluding a shaft adapted to berotated, a rocking member secured to said shaft, a pair of membersadapted to be moved back and forth for causing rotation of said shaft, abracket for supporting said pair of members, means for pivotallysupporting said bracket, said rocking member and rotatable means atright angles to said shaft for controlling the back and forth movementof said pair of members and spring means for maintaining said rotatablemeans an d said pair of members respectively in engagement With saidpair of meniers and said rocking member.

A. A device of the character described including a supporting bracketand a shaft rotatably supported thereby, pivoted means for supportingsaid bracket, a cam member secured to said shaft, a transverse rodrotatably supported by said bracket, reciprocating means affected by the`rotation of said cam member to engage means secured to said transverserodvto cause rotation of said trans verse rod, and spring means formaintaining' supportingr said bracket, a cam member se-` cured to saidshaft, a., transverserod rotatably supported by said bracket, a pair ofreciprocating rods slidably supported by said bracketand moving in arectilinear direction when said cani isv rotated to affect means sencured to said transverse rod to cause rotation ofthe same, andspringmeans for inaintainiiigisaid ,cani in engagement with said reciprocating rods and said `reciprocating rods in` engagement with saidsecured to said transverse rods.

' 6. Ar device of the characterv described including a supportingbracket and a shaft rotatably supported thereby, pivoted means forVsupporting said bracket, a cam member se-V cured to saidzshaft, atransverse rod rotatably supported by said bracket, a pair ofreciproeating ,rods slidably supported by said bracket and moving inopposite rectilinear direc! tions when said cam is rotated, meanssecured on' vsaid rod engaged by onelof said reciprocatiiig rods tocausev rotation of said transverse rod and s rinor means .for mainl n 7u D n taining said cam in engagemnt With saldrev ciprocating rods andsaid reciprocating rods in engagement With said means secured to saidtransverserod.

^ 7; A device cf' the character described'includin'g a supportingbracket and a shaft rotatably supported thereby, pivoted means forsupporting said bracket, a camniember secured to said shaft, atransverse rod rotatably supported by said bracket, a pair ofreciprocatingrods slidably supported by said bracket, one of saidrodsbeing moved in `a1 rectilinear direction by the rotation of said cem toengage means secured to said transverse rod to rotatethe same, saidmeansialso effecting thefmovement of said other reciprocating rod in anopposite direction, and spring meansformaintaining said cam inengagementvvith said reciprocating rods and said reciprocating rdsinf'engagement with said means secured to said transverse rod.

8. A device of the character described including a supporting bracketand a shaft rotatably supported thereby, pivoted means for supportingsaid bracket, a cam member se cured to said shaft, a transverse rodrotatably supported by said bracket, a member pro,- vided withdiametrically opposite Wings secured to said transverse rod, a pair ofreciprocating rods slidably supported by said bracket, the opposite endsof which respectively engage the said cam member and Wings. of themember secured to said rod, said cam member upon rotation effectingrectilinear movement of one of said reciprocating rods to more saidmember secured to said rod to rotate the same, said member also eectingthe movement of said other reciprocating rod in an opposite rectilineardirection, and spring means for maintaining said cam in enga gement Withsaid pair of reciprocating rods and said reciprocating rods inengagement with said member secured to said transverse rod.

9. A device of the character described including a supporting bracketand a shaft rotatably supported thereby, means for pivotally supportingsaid bracket, a cam member secured to said shaft, provided With a pairof receding helical cam faces, a transverse rod rotatably supported bysaid bracket, a member provided With diametrically opposite Wingssecured thereto, a pair of reciprocatingr rods slidably supported bysaid bracket, the opposite ends of Wiich respectively engage the saidcam faces and the said Wings of said member, said reciprocating rodsbeing moved in opposite rectilinear directions upon the ro tation ofsaid cam member through the agency of said shaft, one of said rodseffecting rotation of said transverse rod, through movement of saidmember, said member upon rotation effecting the movement of said otherreciprocating rod in an opposite rectilinear direction, and means formaintaining said cam in engagement with said pair of reciprocating rodsand said reciprocating rods in engagement With said member secured tosaid transverse rod.

Y lO. An arrangement for causing oscillatory movement of a shaft by theoscillatory movement of a second shaft at right angles to said firstshaft, including a cam secured to said second shaft, a supportingbracket for said second shaft, means for pivotally supporting saidbracket,v a rotatable member secured to said first shaft, a pair ofslidable members connected between said cam and said rotatable member,and spring means for maintaining said cam in engagement with said pairof slidable members and said slidable members in engagement with saidrotatable member. Signed by me at Chicago, in the county of Cook andState of Illinois, March, 1927,

MARTIN B. GROUT.

